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mm/slub: make the description of slab_min_objects helpful in doc

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There is no a value assigned to slab_min_objects by default, it always
is 0 that is initialized by compiler if no assigned value by command line.
min_objects is calculated based on processor numbers in calculate_order().
For more details, see commit 9b2cd506e5 ("slub: Calculate min_objects
based on number of processors.")

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Xiongwei Song 2023-12-15 11:41:50 +08:00 committed by Vlastimil Babka
parent cb109a9d60
commit 98d3b6d98f
1 changed files with 1 additions and 1 deletions
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Documentation/mm/slub.rst
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@ -150,7 +150,7 @@ list_lock once in a while to deal with partial slabs. That overhead is
governed by the order of the allocation for each slab. The allocations
can be influenced by kernel parameters:
.. slab_min_objects=x (default 4)
.. slab_min_objects=x (default: automatically scaled by number of cpus)
.. slab_min_order=x (default 0)
.. slab_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER))